The Buffalo Bills are hoping to retain defensive coordinator Jim Schwartz despite bringing in Rex Ryan as head coach.

Vic Carucci of the Buffalo News reports that the Bills want to keep Schwartz on the staff and Adam Caplan of ESPN reports that Schwartz has spoken to Ryan and plans to meet with him once the deal is official.

The official announcement that Rex would be the head coach of the Bills was made early Monday morning.

Rex utilizes a hybrid 3-4/4-3 defense with different looks while Schwartz uses a 4-3 base defense. The Bills finished 4th in points allowed, 4th in yards allowed, 3rd in passing yards allowed and led the NFL with 54.0 sacks in 2014 – better than Rex Ryan’s New York Jets team in all categories in 2014.

Rex Ryan has previously brought assistants with him wherever he goes and was considered very likely to bring Dennis Thurman, his defensive coordinator with the New York Jets, with him to Buffalo.